Urgent: Must fix or wife says dog must go
Our 12-month old female GSD (Raven) has attacked our 12-year old female Australian Shepherd (Daisy) one too many times, and we are on the verge of getting rid of the GSD.
The GSD is limited to the kitchen, with her kennel in the doorway that used to be our dining room. The kitchen is where most activity in the house is, anyway, and when we are in the living room, she can sit in that doorway and still see/hear everything. So, she doesn't miss out on much.
When we got Daisy as a pup, she also was restricted to the kitchen until she was about two years old, then we gave her freedom for the kitchen and living room (we trusted her not to destroy anything by that time, and she never did).
The kitchen has a door to the backyard, so when it is time to go out to play or potty, both dogs go out that way. The huge water bowl is also in the kitchen, so both dogs drink there. Raven's food bowl is in her kennel, while Daisy's is in the living room. Both dogs often lay down together in the kitchen peacefully and both play well outside (Daisy isn't very active at her age, and Raven is very, very high energy).
The problem is that Raven has attacked Daisy several times, though always in the kitchen (or when they are both entering the kitchen from the backyard). Daisy, at her age and half the size of Raven, is defenseless. It has happened 8 or 9 times, with increasing frequency. My wife LOVES Daisy and is sobbing over this last attack, wanting me to get rid of Raven.
My hypothesis is that Raven views the kitchen as HER territory and is establishing her dominance of that area over Daisy. As they never have a problem anyplace else, this makes sense to me. But, I am no expert, so might be very wrong. I also have no idea how to fix the behavior.
What is the solution to this? If we don't fix it immediately, Raven will be looking for a new home.